For homework 3
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controls/__init__.py
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controls/__init__.py
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controls/device.py
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controls/device.py
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from dataclasses import dataclass
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from typing import Optional, Collection, Any
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from abc import abstractmethod
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class DeviceLifecycleState:
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pass # TODO(Homework #3)
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class DevaceError(Exception):
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pass
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class NonReadableTrait(Exception):
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pass
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class NonWritableTrait(Exception):
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pass
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@dataclass
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class TraitDescriptor:
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name: str
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info: Optional[str] = None
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readable: bool = True
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writable: bool = False
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@dataclass
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class ActionDescriptor:
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name: str
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arguments: dict[str, type]
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info: Optional[str] = None
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class Device:
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# TODO(Homework #3)
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_state = DeviceLifecycleState.INIT
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@property
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def state(self) -> DeviceLifecycleState:
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return self._state
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def close(self):
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self._state = DeviceLifecycleState.CLOSE
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def trait_descriptors(self) -> Collection[TraitDescriptor]:
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pass
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def action_descriptors(self) -> Collection[ActionDescriptor]:
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pass
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@abstractmethod
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def __getitem__(self, trait_name: str) -> Optional[Any]:
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"""Return logical state of trait `trait_name`."""
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pass
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class SynchronyDevice(Device):
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def open(self):
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self._state = DeviceLifecycleState.OPEN
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@abstractmethod
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def execute(self, action_name: str, *args, **kwargs):
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"""Execute action `action_name`, using `args` and `kwargs` as action argument."""
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pass
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@abstractmethod
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def read(self, trait_name: str) -> Any:
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"""Read physical state of trait `trait_name` from device."""
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raise NonReadableTrait
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@abstractmethod
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def write(self, trait_name: str, value: Any) -> bool:
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"""Pass `value` to trait `trait_name` of device."""
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raise NonWritableTrait
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@abstractmethod
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def invalidate(self, trait_name: str):
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"""Invalidate logical state of trait `trait_name`"""
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pass
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equipment/__init__.py
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equipment/__init__.py
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equipment/turtle_device.py
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equipment/turtle_device.py
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from turtle import Turtle
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from controls.device import SynchronyDevice
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class TurtleDevice(SynchronyDevice):
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pass # TODO(Homework #3)
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tests/controls/test_device.py
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tests/controls/test_device.py
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from unittest import TestCase
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from controls.device import DeviceLifecycleState
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class DeviceLifecycleStateTest(TestCase):
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def setUp(self) -> None:
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pass
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def test_enum(self):
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self.assertEqual(DeviceLifecycleStateTest["INIT"], DeviceLifecycleStateTest.INIT)
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tests/equipment/test_turtle_device.py
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tests/equipment/test_turtle_device.py
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from unittest import TestCase
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from equipment.turtle_device import TurtleDevice
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class TurtleDeviceTest(TestCase):
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def setUp(self) -> None:
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self.device = TurtleDevice()
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def test_open(self):
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self.device.open()
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self.device.close()
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